A version of the AR-15 rifle popular both in the U.S. and Europe, where allowed in the IPSC Rifle Division and in some Reserve Officers Associations. The AR-15 is a lightweight, magazine-fed, air-cooled, semi-automatic autoloading centerfire rifle designed by Eugene Stoner of the Armalite corporation who developed it as a smaller-caliber version of the AR-10. ... A rifle is a firearm that uses a spiral groove cut into the barrel to spin a projectile (usually a bullet), thus improving accuracy and range of the projectile. ... Motto: E pluribus unum (1789 to present) (Latin: Out of Many, One) In God We Trust (1956 to present) Anthem: The Star-Spangled Banner Capital Washington, D.C. Largest city New York, New York Official language(s) None at federal level; English de facto Government • President • Vice President Federal republic... World map showing Europe Europe is conventionally considered one of the seven continents of Earth which, in this case, is more a cultural and political distinction than a physiogeographic one. ... International Practical Shooting Confederation (IPSC) is a shooting sport based on the concept of practical shooting. ...

In all its components it is similar to the AR15/M16 system and features a chrome-lined heavy barrel. Out of the box it is easy to fire any factory 55 FMJ's in 1" groups (25 mm) at 100 meters. Because of its 1-9" rifling twist it will stabilize .224" caliber bullets up to 75 grs. The small caliber gives modest recoil and high velocity, suited for shooting to about 300 m. But the low kinetic energy make steel-popper shooting difficult, more like shooting a .32 ACP at steel plates. M16 can mean: M-16 (rifle) Eagle Nebula This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... The word calibre (British English) or caliber (American English) designates the interior diameter of a tube or the exterior diameter of a wire or rod, also common for handguns. ... This article is about the projectile, for other uses see bullet (disambiguation). ... Kinetic energy is energy that a body possesses as a result of its motion. ... ACP (Automatic Colt Pistol) is the acronym chosen by Colt to denote its involvement in the design of several pistol cartridges. ...